What this means
The IEEE assigned the MA-M block 0C73EB9 to Beijing L&S Lancom Platform Tech. Co., Ltd.. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 0C:73:EB:9, it is Beijing L&S Lancom Platform Tech. Co., Ltd. hardware.